| NAME2NET Limited | Extraterritorial | 2006 |
| Named Gear Limited | Wholesale & retail | 2014 |
| Namekstars Limited | Health & social care | 2023 |
| Namibia Exploration Company Ltd | Extraterritorial | 2015 |
| Namma Bengaluru Limited | Hospitality | 2023 |
| NAN TEI (Nottingham) Limited | Hospitality | 2024 |
| NAN TEI (UK) Limited | Hospitality | 2018 |
| Nana Spa Limited | Other services | 2022 |
| Nanch Limited | Construction | 2025 |
| Nandako Limited | Real estate | 2025 |
| Nanenji Holding Limited Group Ltd | Wholesale & retail | 2025 |
| Nangle Ltd | Other services | 2024 |
| Nanking Garden Limited | Hospitality | 2026 |
| Nankypoo Limited | Arts & recreation | 2003 |
| Nanny Tots Limited | Administrative & support | 2006 |
| Nano Green Trade Limited | Wholesale & retail | 2018 |
| Naomi Holland Beauty & Aesthetics Ltd | Other services | 2021 |
| Naomi Thomas Communications Ltd | Professional & scientific | 2021 |
| NAP Bidco Limited | Financial services | 2022 |
| NAP Topco Limited | Financial services | 2022 |
| Napics Consultant Limited | Health & social care | 2019 |
| Naptha Limited | Other services | 2012 |
| Naqeeb Estates Limited | Real estate | 2024 |
| Nara Nurseries Limited | Education | 2022 |
| Narayan Business Consultancy Limited | Professional & scientific | 2014 |
| Narayan PVT Ltd | Real estate | 2022 |
| Narex Fresh Fruit and VEG Ltd | Wholesale & retail | 2025 |
| Narima Health Holdings Ltd | Other services | 2023 |
| Narra Ltd | Health & social care | 2009 |
| Narrative Consulting Services Ltd | Professional & scientific | 2024 |
| NAS Welding Limited | Manufacturing | 2016 |
| Nascent UK Solutions Limited | Other services | 2021 |
| Naseeb Nottingham Limited | Hospitality | 2023 |
| Naseeb Takeaway Ltd | Hospitality | 2019 |
| Naseem Akram Ltd | Professional & scientific | 2012 |
| Nasha GEE Ltd | Information & communication | 2019 |
| Nashe Informatics Ltd | Information & communication | 2012 |
| Nashed Ltd | Wholesale & retail | 2020 |
| Nashill Builders Limited | Real estate | 1988 |
| Nashtina Limited | Public administration | 2023 |
| Nashz Valeting Ltd | Wholesale & retail | 2025 |
| Naskam Community Interest Company | Hospitality | 2014 |
| Nass-Tech Autos Limited | Wholesale & retail | 2009 |
| Nastya Engineering Ltd | Professional & scientific | 2016 |
| NAT Property Investments Limited | Real estate | 2025 |
| Natalia Professional Cleaning Ltd | Administrative & support | 2022 |
| Natalie Cooper Limited | Arts & recreation | 2025 |
| Natasha Williams Ltd | Professional & scientific | 2011 |
| Natashafoziamakeup Ltd | Other services | 2019 |
| Natgraph Limited | Manufacturing | 1980 |
| Nath Associates Limited | Wholesale & retail | 2009 |
| Nathan O'Connor Limited | Professional & scientific | 2017 |
| Nathan Watson Sports Ltd | Arts & recreation | 2016 |
| Nathaniel Wilson Ltd | Professional & scientific | 2020 |
| Nation WS Servicing Ltd | Other services | 2026 |
| National Association of Child Contact Centres | Other services | 1999 |
| National Car Limited | Wholesale & retail | 2025 |
| National Care Consortium Holdings Ltd | Financial services | 2019 |
| National Care Consortium Ltd | Health & social care | 2017 |
| National Care Personnel Ltd | Administrative & support | 2024 |
| National Coalition Building Institute Nottingham and Nottinghamshire | Education | 2007 |
| National Express Living Ltd | Health & social care | 2015 |
| National Fire Surveys Ltd | Public administration | 2023 |
| National Fleet Solutions Limited | Wholesale & retail | 2002 |
| National Healthcare Solutions Ltd | Administrative & support | 2019 |
| National Home Improvement Council | Other services | 1975 |
| National Justice Museum | Education | 1993 |
| National Justice Museum Trading Limited | Arts & recreation | 1997 |
| National Lift Services Limited | Manufacturing | 2019 |
| National Maintenance Ltd | Administrative & support | 2009 |
| National Organisation for the Treatment of Abuse Ltd | Other services | 2001 |
| National Parking Services Limited | Professional & scientific | 2022 |
| National UK Couriers Ltd | Transport & logistics | 2022 |
| Nationmed Ltd | Administrative & support | 2017 |
| Nationwide Alarmcall Ltd | Other services | 2017 |
| Nationwide Coded Welding Limited | Manufacturing | 2012 |
| Nationwide Courier Service Ltd | Transport & logistics | 2013 |
| Nationwide Fire Sprinklers (1998) Limited | Financial services | 2012 |
| Nationwide Fire Sprinklers Limited | Construction | 2006 |
| Nationwide Foodstores Ltd | Wholesale & retail | 2026 |
| Nationwide Healthcare Providers Limited | Health & social care | 2010 |
| Nationwide Labour Services Ltd | Information & communication | 2026 |
| Nationwide Make Moves Ltd | Real estate | 2013 |
| Nationwide Middle East Properties Limited | Wholesale & retail | 2021 |
| Nationwide Motor Claims Limited | Professional & scientific | 1999 |
| Nationwide Motor Contracts Limited | Wholesale & retail | 1986 |
| Nationwide Sign Services Ltd | Construction | 2026 |
| Nationwide Slip Testing Ltd | Administrative & support | 2020 |
| Native Groundcare Limited | Administrative & support | 2017 |
| Natjat Blessed Company Ltd | Health & social care | 2013 |
| Natkir MRO Consulting Ltd | Professional & scientific | 2019 |
| Natmar Pro Limited | Construction | 2023 |
| Natpark Limited | Real estate | 1997 |
| Nats Print Shop Limited | Manufacturing | 2025 |
| Natspec | Education | 2006 |
| Natural Creations Jewellery Ltd | Wholesale & retail | 2014 |
| Natural CUT Stone Limited | Manufacturing | 2009 |
| Natural Energy Services Ltd | Construction | 2020 |
| Natural Innovations Limited | Manufacturing | 2002 |
| Natural Limited Company Ltd | Health & social care | 2025 |